Military Sinkhole Trail is a 4.5 mile lightly trafficked out and back trail located near Forest Lakes, AZ and is rated as moderate. The trail is primarily used for hiking and is accessible year-round. 4.5 miles 1135 feet Out & Back hiking Expand Map Sign up now to see this map! Reviews (0)Photos (0)Recordings (1)No one has reviewed this trail yet. Be the first!